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020 _aERNET
040 _aMAIN
082 _a335
100 _aCCITT
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245 0 _aBLUE BOOK,VOLUME VI,FASCICLE VI.10: DIGITAL SUBSCRIBER SIGNALLING SYSTEM NO 1 (DSS1),DATA LINK LAYER
260 _bITU
_c1989
_aGENEVA
300 _b141
500 _aSC-021
942 _cBK
999 _c41623
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